1. By mixing the 2.17g of an unknown non-electrolyte a solution is prepared with the 225.0g of chloroform. The freezing point of the mixture is -64.1g Celsius, while the freezing point of chloroform is-63.5 Celsius. The value kf for chloroform is -4.68 k/m. Identify the molar mass of the unknown.
2. Discuss why is the freezing point of pure water is measured experimentally rather than just assign a value of Celsius?